Dynamics of marginally trapped surfaces in a binary black hole merger: Growth and approach to equilibrium

  title={Dynamics of marginally trapped surfaces in a binary black hole merger: Growth and approach to equilibrium},
  author={Anshu Gupta and Badri Krishnan and Alex Buus Nielsen and Erik Schnetter},
  journal={Physical Review D},
The behavior of quasi-local black hole horizons in a binary black hole merger is studied numerically. We compute the horizon multipole moments, fluxes and other quantities on black hole horizons throughout the merger. These lead to a better qualitative and quantitative understanding of the coalescence of two black holes; how the final black hole is formed, initially grows and then settles down to a Kerr black hole. We calculate the rate at which the final black hole approaches equilibrium in a… 
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